Re: Redirecting screencapture output
Re: Redirecting screencapture output
- Subject: Re: Redirecting screencapture output
- From: Lorenzo <email@hidden>
- Date: Thu, 22 Jul 2004 16:25:43 +0200
Yes, currently I save the file, I load it in a NSImage, then I remove it.
It's a little bit slow, but it works.
Anyway, I don't know how to work with fifo.
Best Regards
--
Lorenzo
email: email@hidden
>
From: Yann Bizeul <email@hidden>
>
Date: Thu, 22 Jul 2004 13:22:38 +0200
>
To: Lorenzo <email@hidden>
>
Cc: email@hidden
>
Subject: Re: Redirecting screencapture output
>
>
As far as I know, screencapture does not provide a way to pipe its
>
result to stdout.
>
An ugly workaround would be to create a fifo in /tmp/ and save the
>
result to this fifo. You would be able to read the fifo to get the file
>
back. Like this, you won't have file operation overhead.
>
>
Personaly, I would write the screen to /tmp and read it back with
>
NSImage, If I don not find a way to handle the screen capture all by
>
myself.
>
>
Le 21 juil. 04, ` 15:29, Lorenzo a icrit :
>
>
> Hi,
>
> as you know the unix command "screencapture" saves the main screen
>
> content
>
> to a PDF file or to the clipboard. Instead I would like to don't save
>
> any
>
> file (it's slow), don't occupy the clipboard, but I would like to get
>
> that
>
> output in a NSData or NSImage variable in my application. Is any way
>
> to do
>
> that? Piping the command? If so, I don't know the sintax.
>
> Can someone help me?
>
>
>
> Actually I call
>
> NSArray *args;
>
> args = [NSArray arrayWithObjects:@"-x", @"-m", @"filePath", nil];
>
>
>
> I tried even to add
>
> NSPipe *myPipe = [NSPipe pipe];
>
> [task setStandardOutput:myPipe];
>
>
>
> but the length of
>
> NSData *dataOut = [[[task standardOutput] fileHandleForReading]
>
> availableData];
>
> is zero. And the file has been saved anyway.
>
>
>
> I tried also the following unsuccessfully. I don't know the syntax.
>
> args = [NSArray arrayWithObjects:@"-x", @"-m", @"|", nil];
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> What should I write after the pipe "|" ?
>
>
>
> Any code would be welcome. Thanks.
>
>
>
>
>
> Best Regards
>
> --
>
> Lorenzo
>
> email: email@hidden
>
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--
>
Yann Bizeul - yann at tynsoe.org
>
http://projects.tynsoe.org/
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